User Tools

(aka 'the best point military institute')

Site Tools

tools:grep

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revisionPrevious revision
Next revision		Previous revision
tools:grep [2024/09/28 03:00] – [Search Files in Specific Directories] Humphrey Boa-Garttools:grep [2025/09/30 22:44] (current) – external edit 127.0.0.1
Line 23: Line 23:
 ==== Search Files in Current Directory ==== ==== Search Files in Current Directory ====
  
-You can also use ''grep'' to search inside all the files within a folder, and not just one. Just replace the filename with an asterisk. To search the PWD for all files containing //INSERTSTRING//, format your command as so:+You can also use ''grep'' to search inside all the files within a folder, and not just one. Just replace the filename with an asterisk. To search the pwd for all files containing //INSERTSTRING//, format your command as so:
  
   $ grep “INSERTSTRING” *   $ grep “INSERTSTRING” *
Line 35: Line 35:
   $ grep “INSERT*” *.txt   $ grep “INSERT*” *.txt
  
-The ''-R'' flag lets you search child directories. So to search your PWD **and** all child directories recursively for all files containing //INSERTSTRING//:+The ''-R'' flag lets you search child directories. So to search your pwd **and** all child directories recursively for all files containing //INSERTSTRING//:
  
   $ grep -R "INSERTSTRING" *   $ grep -R "INSERTSTRING" *
  
-You can combine flags as well. To search your PWD and all child directories recursively for all //.txt// files containing //INSERTSTRING//, and to make grep tell you the line number that the string is found on, combine the ''-R'' and ''-n'' flags like this:+You can combine flags as well. To search your pwd and all child directories recursively for all //.txt// files containing //INSERTSTRING//, and to make grep tell you the line number that the string is found on, combine the ''-R'' and ''-n'' flags like this:
  
   $ grep -Rn "INSERTSTRING" *.txt   $ grep -Rn "INSERTSTRING" *.txt
Line 61: Line 61:
   * ''-i'' - Searches made with ''grep'' are case-sensitive. Use this flag to search for both uppercase and lowercase versions of the same string.   * ''-i'' - Searches made with ''grep'' are case-sensitive. Use this flag to search for both uppercase and lowercase versions of the same string.
   * ''-l'' - Print only the filename(s) of search results. Incredibly useful when using ''-R'' on large directory trees.   * ''-l'' - Print only the filename(s) of search results. Incredibly useful when using ''-R'' on large directory trees.
 +  * ''-w'' - Match only whole words. 
 +  * ''-x'' - Match only whole lines. 
 +  * ''-v'' - Inverted search. Returns only non-matching lines. 
 +  * ''-s'' - Suppress error messages. Useful in bash scripts.
 ===== Variations ===== ===== Variations =====
  
tools/grep.1727492423.txt.gz · Last modified: (external edit)

Find this page online at: https://bestpoint.institute/tools/grep